A train that was hauling 73 tankers of crude oil across the the US/Canadian border derailed around 1:00 a.m. last night causing a massive explosion in the small town of Lac Megantic in Quebec, about 155 miles east of Montreal, reports ABC News.

When you see the center of your town almost destroyed, you’ll understand that we’re asking ourselves how we are going to get through this event.

Here’s what you need to know…

1. The Town of Lac Megantic Has Been Completely Evacuated

The fire caused by the explosion quickly spread from the area around the tracks and threatened nearby homes, including a retirement community. A full evacuation of the town’s 1000 population was ordered, reports CBC.

2. It’s Caused a Multi-National Firefighting Effort

Firefighters have been battling the blaze all night. It’s reported that several different fire departments from several counties are involved, including trucks from the US. 27 fire-fighting vehicles have been reported on scene.

4. The Explosion May Cause an Environmental Disaster

It what could provide an environmental issue, crude oil has been seen falling into the Chaudiere River. The Associated Press have reported Environment Quebec spokesman Christian Blanchette saying:

We also have a spill on the lake and the river that is concerning us. We have advised the local municipalities downstream to be careful if they take their water from the Chaudiere River.

The town is also battling a “nauseating odor” which has overcome the town. Toxins in the air are a serious concern after fire and explosions like this. A mobile laboratory to determine the air quality has been established in the town.